Gravity mediated entanglement between light beams as a table-top test of quantum gravity

• URL: http://arxiv.org/abs/2210.12713v2
• Date: Sun, 19 Jan 2025 23:36:56 GMT
• Title: Gravity mediated entanglement between light beams as a table-top test of quantum gravity
• Authors: Stefan Aimet, Hadrien Chevalier, M. S. Kim,
• Abstract summary: There is still no experimental evidence of any non-classical features of gravity.<n>Recent table-top protocols based on low-energy quantum control have opened a new avenue into the investigation of non-classical gravity.<n>In this work, we examine the entangling capacity of the gravitational interaction between two light pulses.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Over the past century, a large community within theoretical physics has been seeking a unified framework for quantum gravity. Yet, to date, there is still no experimental evidence of any non-classical features of gravity. While traditional experimental proposals would usually require immensely challenging Planck scale experiments, recent table-top protocols based on low-energy quantum control have opened a new avenue into the investigation of non-classical gravity. An approach that has sparked high interest, both in terms of experimental feasibility and of theoretical implications, is the indirect witnessing of non-classical gravity through the detection of its capacity to act as an entangling channel. Most discussions have been centred on the entanglement generation between two gravitationally coupled massive systems. In this work, we instead examine the entangling capacity of the gravitational interaction between two light pulses. We explain the main experimental and theoretical advantages of having a photonic protocol, and lay out the steps leading to the determination of the entangling phase, using the path integral formalism and linearised gravity. We establish a closed form formula for the entangling phase and provide an estimated order of magnitude of the average photon number required for the generation of appreciable phase. Using statistical analysis, we show how entanglement may be certified with lower phase signal.

Related papers

• Probing classical and quantum violations of the equivalence of active and passive gravitational mass [0.0]
  The equivalence of active and passive (EAP) gravitational mass is one of the most fundamental principles of gravity. We show how it can be used to probe quantum gravity in laboratory-based experiments. Our results open new opportunities for fundamental tests of gravity in high-precision laboratory experiments.
  arXiv  Detail & Related papers  (2025-03-20T14:45:24Z)
• Exploring nontrivial topology at quantum criticality in a superconducting processor [23.278631632470628]
  We present an experimental exploration of the critical cluster Ising model by preparing its low-lying critical states on a superconducting processor with up to $100$ qubits. We develop an efficient method to probe the boundary $g$-function based on prepared low-energy states, which allows us to uniquely identify the nontrivial topology of the critical systems under study. Our results demonstrate the low-lying critical states as useful quantum resources for investigating the interplay between topology and quantum criticality.
  arXiv  Detail & Related papers  (2025-01-08T18:39:44Z)
• Quantum Sensing from Gravity as Universal Dephasing Channel for Qubits [41.96816488439435]
  WeExploit the generic phenomena of the gravitational redshift and Aharonov-Bohm phase. We show that entangled quantum states dephase with a universal rate. We propose qubit-based platforms as quantum sensors for precision gravitometers and mechanical strain gauges.
  arXiv  Detail & Related papers  (2024-06-05T13:36:06Z)
• Table-top nanodiamond interferometer enabling quantum gravity tests [34.82692226532414]
  We present a feasibility study for a table-top nanodiamond-based interferometer. By relying on quantum superpositions of steady massive objects our interferometer may allow exploiting just small-range electromagnetic fields.
  arXiv  Detail & Related papers  (2024-05-31T17:20:59Z)
• Entanglement Dynamics in Quantum Continuous-Variable States [2.480301925841752]
  Gravitation between two quantum masses is one of the most straightforward scenarios where quantum features of gravity could be observed. This thesis introduces general tools to tackle interaction-mediated entanglement and applies them to two particles prepared in continuous-variable states.
  arXiv  Detail & Related papers  (2024-05-12T19:21:21Z)
• Testing Quantum Gravity using Pulsed Optomechanical Systems [13.650870855008112]
  We consider the Schr"odinger-Newton (SN) theory and the Correlated Worldline (CWL) theory, and show that they can be distinguished from conventional quantum mechanics. We find that discriminating between the theories will be very difficult until experimental control over low frequency quantum optomechanical systems is pushed further.
  arXiv  Detail & Related papers  (2023-11-03T17:06:57Z)
• Testing the nonclassicality of gravity with the field of a single delocalized mass [55.2480439325792]
  A setup is proposed that is based on a single delocalized mass coupled to a harmonically trapped test mass. We investigate the in-principle feasibility of such an experiment, which turns out to crucially depend on the ability to tame Casimir-Polder forces.
  arXiv  Detail & Related papers  (2023-07-18T15:40:16Z)
• Coherent control of a high-orbital hole in a semiconductor quantum dot [21.05348937863074]
  coherent manipulation of single charge carriers in quantum dots is limited mainly to their lowest orbital states. We demonstrate an all-optical method to control high-orbital states of a hole via stimulated Auger process. Our work opens new possibilities for understanding the fundamental properties of high-orbital states in quantum emitters.
  arXiv  Detail & Related papers  (2022-12-21T03:49:46Z)
• Gravitational Optomechanics: Photon-Matter Entanglement via Graviton Exchange [0.0]
  This paper shows that the interaction which gives rise to the light-bending also induces photon-matter entanglement as long as gravity and matter are treated at par with quantum mechanics. The quantum light-bending interaction is capable of discerning between the spin-2 and spin-0 gravitons thus also providing a test for alternative theories of gravity at short distances and at the quantum level.
  arXiv  Detail & Related papers  (2022-09-19T18:00:25Z)
• Dephasing and inhibition of spin interference from semi-classical self-gravitation [0.0]
  We present a model to study effects of self-gravitation from semi-classical gravity using spin superposition states in inhomogeneous magnetic fields. Results suggest that spin interferometry could provide a more accessible route towards an experimental test of quantum aspects of gravity.
  arXiv  Detail & Related papers  (2021-07-13T11:09:38Z)
• Spacetime effects on wavepackets of coherent light [24.587462517914865]
  We introduce an operational way to distinguish between the overall shift in the pulse wavepacket and its genuine deformation after propagation. We then apply our technique to quantum states of photons that are coherent in the frequency degree of freedom. We find that the quantum coherence initially present can enhance the deformation induced by propagation in a curved background.
  arXiv  Detail & Related papers  (2021-06-23T14:20:19Z)
• Experimental progress on quantum coherence: detection, quantification, and manipulation [55.41644538483948]
  Recently there has been significant interest in the characterization of quantum coherence as a resource. We discuss the main platforms for realizing the experiments: linear optics, nuclear magnetic resonance, and superconducting systems. We also review experiments exploring the connections between coherence and uncertainty relations, path information, and coherence of operations and measurements.
  arXiv  Detail & Related papers  (2021-05-14T14:30:47Z)
• Decoherence effects in non-classicality tests of gravity [0.0]
  We study the effects of decoherence on the system's dynamics by monitoring the corresponding degree of entanglement. We find that any value of the parameters of the Continuous Spontaneous localization model would completely hinder the generation of gravitationally induced entanglement.
  arXiv  Detail & Related papers  (2020-12-11T10:30:34Z)
• Tests of Quantum Gravity near Measurement Events [0.0]
  We propose less challenging experiments that test quantum gravity against theories with classical space-times defined by postulating semi-classical gravity for mesoscopic systems.
  arXiv  Detail & Related papers  (2020-10-22T15:44:30Z)
• From a quantum theory to a classical one [117.44028458220427]
  We present and discuss a formal approach for describing the quantum to classical crossover. The method was originally introduced by L. Yaffe in 1982 for tackling large-$N$ quantum field theories.
  arXiv  Detail & Related papers  (2020-04-01T09:16:38Z)
• Theoretical methods for ultrastrong light-matter interactions [91.3755431537592]
  This article reviews theoretical methods developed to understand cavity quantum electrodynamics in the ultrastrong-coupling regime. The article gives a broad overview of the recent progress, ranging from analytical estimate of ground-state properties to proper computation of master equations. Most of the article is devoted to effective models, relevant for the various experimental platforms in which the ultrastrong coupling has been reached.
  arXiv  Detail & Related papers  (2020-01-23T18:09:10Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.